Finding the Fourth Proportional to 1,150.60, 1,587.94 and 684.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.60 : 1,587.94 = 684.84 : x
2. Step 2: Convert to fraction form
   1,150.60/1,587.94 = 684.84/x
3. Step 3: Cross multiply
   1,150.60x = 1,587.94 × 684.84
4. Step 4: Simplify right side
   1,150.60x = 1,087,484.83
5. Step 5: Solve for x
   x = 1,087,484.83/1,150.60
6. Step 6: Final answer
   x = 945.15